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用水热方法制备的半孔双金属S化纳米颗粒,用于增强4-烯的光降解

Ensiyeh Taheri¹, Ali Fatehizadeh¹, Sousan Hadi²

¹Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran; Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran.

Journal of environmental management

|November 8, 2023

概括

氧化物纳米颗粒使用可见光有效降解4-烯 (4-CP). 这种新型催化剂产生基激素和单片氧气,显著增强了用于去除有机污染物的光催化活性.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
纳米技术纳米技术

背景情况:

氧化 (MgO) 纳米粒子在各种应用中显示出潜力.
离子兴奋剂可以修改MgO特性以提高功能.
光催化降解是去除有机污染物的关键技术.

研究的目的:

为了合成和表征双金属Ag-doped S-MgO纳米粒子.
为了评估Ag-doped S-MgO对4-烯醇 (4-CP) 降解的光催化效率.
调查参与光催化作用的活性物种和反应动力学.

主要方法:

双金属Ag-doped S-MgO纳米颗粒的水热合成.
使用能量分散式X射线光谱学 (EDX) 进行表征.
在可见光下对4-CP进行光催化降解实验.
带隙估计和灭研究以确定反应性氧物种.

主要成果:

通过EDX确认了Ag和S在MgO网格中的成功注.
与纯 MgO (7.8 eV) 相比,Ag-doped S-MgO 的带隙能量减少 (3.7 eV).
达到最大的4CP降解效率为99.60±0.50%.
确定了基基 (•OH) 和单片二氧化物 (1O2) 作为关键物种.
随着硫酸盐的添加,运动速率常数增加了24.8%.

结论:

Ag-doped S-MgO纳米粒子表现出增强的光学特性和光催化活性.
催化剂通过产生OH和1O2基来有效降解4-CP.
这项研究提出了一种新的方法,用于合成高效的光催化剂,用于有机污染物的分解.

关键词:

4 - - 二醇的使用方法水热法是一种水热法.氧化是一种氧化.光催化作用的光催化处理水处理水处理水处理

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